[PATCH v14 04/18] irqchip/sifive-plic: Use riscv_get_intc_hwnode() to get parent fwnode

From: Anup Patel <apatel@ventanamicro.com>
To: Palmer Dabbelt <palmer@dabbelt.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Frank Rowand <frowand.list@gmail.com>,
	Conor Dooley <conor+dt@kernel.org>
Cc: "Marc Zyngier" <maz@kernel.org>, "Björn Töpel" <bjorn@kernel.org>,
	"Atish Patra" <atishp@atishpatra.org>,
	"Andrew Jones" <ajones@ventanamicro.com>,
	"Sunil V L" <sunilvl@ventanamicro.com>,
	"Saravana Kannan" <saravanak@google.com>,
	"Anup Patel" <anup@brainfault.org>,
	linux-riscv@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	"Anup Patel" <apatel@ventanamicro.com>
Subject: [PATCH v14 04/18] irqchip/sifive-plic: Use riscv_get_intc_hwnode() to get parent fwnode
Date: Thu, 22 Feb 2024 15:09:52 +0530	[thread overview]
Message-ID: <20240222094006.1030709-5-apatel@ventanamicro.com> (raw)
In-Reply-To: <20240222094006.1030709-1-apatel@ventanamicro.com>

The RISC-V INTC irqdomain is always the parent irqdomain of SiFive PLIC
so use riscv_get_intc_hwnode() to get the parent fwnode similar to other
RISC-V drivers which use local interrupts.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
---
 drivers/irqchip/irq-sifive-plic.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c
index 558ae63795d9..615498071b6e 100644
--- a/drivers/irqchip/irq-sifive-plic.c
+++ b/drivers/irqchip/irq-sifive-plic.c
@@ -422,6 +422,7 @@ static int plic_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	unsigned long plic_quirks = 0;
 	struct plic_handler *handler;
+	struct irq_domain *domain;
 	struct plic_priv *priv;
 	bool cpuhp_setup;
 	unsigned int cpu;
@@ -501,8 +502,9 @@ static int plic_probe(struct platform_device *pdev)
 		}
 
 		/* Find parent domain and register chained handler */
-		if (!plic_parent_irq && irq_find_host(parent.np)) {
-			plic_parent_irq = irq_of_parse_and_map(to_of_node(dev->fwnode), i);
+		domain = irq_find_matching_fwnode(riscv_get_intc_hwnode(), DOMAIN_BUS_ANY);
+		if (!plic_parent_irq && domain) {
+			plic_parent_irq = irq_create_mapping(domain, RV_IRQ_EXT);
 			if (plic_parent_irq)
 				irq_set_chained_handler(plic_parent_irq,
 							plic_handle_irq);
-- 
2.34.1


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